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Finding the Fourth Proportional to 239,478.52, 330,502.53 and 137,517.34

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Solution

The fourth proportional to 239,478.52, 330,502.53 and 137,517.34 is: 189,786.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,478.52 : 330,502.53 = 137,517.34 : x
  2. Step 2: Convert to fraction form
    239,478.52/330,502.53 = 137,517.34/x
  3. Step 3: Cross multiply
    239,478.52x = 330,502.53 × 137,517.34
  4. Step 4: Simplify right side
    239,478.52x = 45,449,828,788.87
  5. Step 5: Solve for x
    x = 45,449,828,788.87/239,478.52
  6. Step 6: Final answer
    x = 189,786.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.